Patent GB-735893-A (GB)
Title: Improvements in or relating to statistical machines
Inventor: JONES CHARLES THOMAS ARTHUR
Filed: 1952-12-04
Abstract: 735,893. Statistical apparatus. POWERSSAMAS ACCOUNTING MACHINES, Ltd. Nov. 12, 1953 [Dec. 4, 1952], No. 30841/52. Class 106 (1). A record card controlled statistical machine comprising sensing means with a reciprocable shutter for each card column to control operation thereof, and field selecting means co-operating with the shutters to permit consecutive sensing of parallel groups of columns of the same record card, is characterized in that the field selecting means comprises a control element for each shutter, an actuator connected to each control element to effect operation thereof, a conditioning element for each actuator manually settable to condition the actuator for operation, and operating members common to all conditioning elements and operable during different sensing operations of a cycle to cause conditioned actuators to render active the shutters controlled thereby. Cards are sensed between plates 1 and 2 by a reciprocating pin box in known manner the sensing pins 5 co-operating with members 14 which may. be conditioned from this normal inactive i.e. offset position to an active i.e. " in line " position by means of shutters 22 which are provided for each column. The shutters 22 are prevented from moving to the right as viewed in Fig. 1 by members 27 which are provided with a lug 28 engaging the right-hand end of the member 22. The members 27 may be displaced against their bias springs 31 by a rod 32. A rod 32 may be actuated by a bell crank 34 pivoted at 35, Fig. 2, when the actuating member 38 is moved anti-clockwise as viewed in Fig. 2 above its. pivot 73 by one or other of the members 42, 43 mounted on arms 50, 52 mounted on shafts 51, 52. Each conditioning element 38 is also movable to a neutral position by means of its associated bell crank 39 so that resistor operating member 42, 43 engages with it. The operating members 42, 43 are operated by means of arms 54, 55, secured to the shafts 51, 53, Fig. 3. The arms 54, 55 are reciprocated by means of an arm 68 having shoulders 69, 70 either of which may engage with its associated pin 56, 57 depending on whether the arm 68 is raised by the interponent 74 or not. Movement of the arm 68 is effected by rocking a bell crank 59 pivoted at 60 so that member 58 is moved to the left as viewed in Fig. 3 the shoulder 62 engaging the pin 63 and rocking the link 66 to actuate the arm 68. Further sets of operating members 86, 87, 104, 105 and 108, 109, Fig. 2, are provided linked to the bell crank 34 by pins secured in a sliding member 45 and are employed in connection with field selection during interstage sensing operations as described in Specification 672,294 and a duplex connection box described in Specification 732,927. The operating members 42, 43 are rendered inactive by the second interponent 72 which between the second and third sensing operations of a cycle of four sensing operations is moved upwards by a lever 92 pivoted at 78 connected with a link 93 controlled by cam 94, Fig. 1. Connection between the cam 94 and link 93 is effected by a bell crank lever 95. The cams 80 and 94 are secured to spindles 96 and 96a which respectively correspond to the control shafts described in Specification 672,294. In order to provide for complete sensing of a card in one operation a lever 123 is moved manually in counter clockwise direction as viewed in Fig. 2 to move a bail 117 thereby moving all actuators 34 in clockwise direction to render all the shutters 22 active. Specifications 401,012, 473,757 and 518,752 also are referred to.